Question

why does the sun appear reddish during sunrise and sunset​

Answer 1

Near the horizon sunlight passes through thicker layers of air having larger particles that scatter light of longer wavelength such as the red end of the spectrum. Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun appears reddish during sunrise and sunset​.

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Answer 2

Answer:because at the time of sunset and sunrise light reaching earth's surface is fartest .

Explanation:

White light comes from sun which consists of all 7 colours i.e. VIBGYOR and red light has the largest wavelength so it scatters less. That's why it can travel larger distance without getting scattered than any other colours.